Half an apple with .5-1 oz of walnuts or cheese
Cheese sticks
Turkey pepperette (however these do have nitrates
1/2 grilled chicken breast (I will cook up a bunch at the beginning of the week and put them in the fridge)
Hard boiled eggs
Veggies and dip or hummus
Sometimes a nut delight bar or a lunabar (these do have carbs but a reasonable amount 10-15g and protein)